ANGIOSPERM DIVERSITY OF AGRO-ECOSYSTEMS-A CASE STUDY FROM KOOROPPADA GRAMAPANCHAYATH, KOTTAYAM, KERALA STATERogimon P.Thomas, Sreekumar K.R, Bijeshmon P.P. and Joby Paul
The diversity of angiosperms in Kooroppada gramapanchayath has been analysed. The angiosperm species diversity indicated that nine sites had uniform diversity due to plantation of agro-ecosystem in nature. The highest distribution frequencies showed by Ageratum conyzoides, Glycosmis pentaphylla and Hevea brasiliensis in herbs, shrubs and climbers and trees categories respectively. Oldenlandia corymbosa, Psychotria flavida and Hevea brasiliensis showed the highest density values among the herbs, shrubs and climbers and trees categories respectively. The abundance value showed highest in herbs by Bambusa vulgaris and Bulbophyllum sterile, in shrubs and climbers by Psychotria flavida and in among trees by Hevea brasiliensis. During the study, the Rubiaceae endemic shrub Ixora johnsonii Hook.f has encountered in rubber plantations. The Shannon Weiner index indicated that the species are distributed uniformly and show high diversity without dominant species.